What is Esterification Process & Transesterification and Esterification Differences
The need for alternative sources energy makes a lot of people curious on what is esterification process. Esterification is the reaction or effect when carboxylic acids and alcohols are mixed to create esters.
Esters are the extracted from carboxylic acids. Carboxylic acid contains COOH group. The hydrogen in the COOH group is ester is being substituted by a different kind of hydrocarbon.
Esters are created by heating carboxylic acids with alcohol and an acid catalyst being present in the process. The catalyst being is usually sulphuric acid.
In some cases, hydrogen chloride in its dry gas form is utilized. However, they have a tendency to involve some aromatic esters that contains a benzene ring. Basically, the biodiesel production process flow diagram looks like this:
CH3COCl + CH3CH2OH are equivalent to CH3COOCH2CH3 + HCl.
Esterification of biodiesel
It is the process where renewable resources like animal fats and vegetable oils could be transformed chemically to clean-burning biodiesel.
It was believed before, that vegetable oils can be directly used without the need for any preparation or processing. But due to widespread testing, it was proven that even if diesel engines can operate efficiently on plain vegetable oil, the residues and deposits from combustion would create some problems with the piston rings, fuel injectors, and oil performance.
Through a process of mixing the oils with ethanol or methanol, a reaction called esters are formed. Esters are relatively insoluble in water. They have this tendency to form a tiny layer in the surface of the water. So water is not a good base for this process. The best tool for the job is acid. The result is the esterified edition of vegetable oil or the esterification biodiesel product.
To be able to inform you further on the subject let us tackle the topic about what are differences between esterification process and transesterification:
Esterification is the process that utilizes an acid that can alter the FFA (free fatty acids) chains far from the molecule of glycerol, thereby allowing methanol to stick to them and develop into biodiesel.
Transesterification process is the method that utilizes a base compound as the important catalyst to split the FFA chains from the molecule of glycerol then let methanol thereby allowing methanol to stick to them to create biodiesel.
The esterification process uses sulfuric acid.
Transesterification process uses Potassium Hydroxide or Sodium Hydroxide.
Esterification is called the Acid method.
Transesterification is referred to as the Base method.
" Biodiesel esterification reactions have much slower reactions than the transesterification process. "
In cases where oil titrates become high, the acid method could be utilized to decrease the titration, mainly because it can modify the FFA chains to produce biodiesel.
Esterification process yields more fuel than regular transesterification biodiesel production in cases of high oil titrates. Using the base method will produce soap instead of fuel.
A lot of people will produce biodiesel using these two processes.
The use of the esterification process of producing biodiesel from vegetable oil has many advantages. It is very useful during high titration.
Producing biodiesel products will help the environment greatly. This is the basic reason why lots of people are into this alternative source of fuel.